METAL COMPOUNDS OF THE TCNX REDOX SYSTEMS -FROM ELECTRON TRANSFER TO SPIN DISTRIBUTION AND MAGNETISM
The TCNX ligands, TCNE (tetracyanoethene), TCNQ (7,7,8,8-tetracyano-p-quinodimethane), and TCNB (1,2,4,5-tetracyanobenzene), are capable of bridging up to four metal centers in discrete molecular complexes or coordination polymers. In addition, the highly non-innocent TCNX ligands may exist in neutr...
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| Lenguaje: | English |
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Sociedad Chilena de Química
2008
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| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000100002 |
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| Sumario: | The TCNX ligands, TCNE (tetracyanoethene), TCNQ (7,7,8,8-tetracyano-p-quinodimethane), and TCNB (1,2,4,5-tetracyanobenzene), are capable of bridging up to four metal centers in discrete molecular complexes or coordination polymers. In addition, the highly non-innocent TCNX ligands may exist in neutral n acceptor form, as stable monoanionic radicals, or as dianions, which has generated a unique coordination chemistry. Several such compounds, particular those involving the TCNX'" bridges, have found interest for molecular magnetism studies, organic conductor research, and in concepts of molecular computing. This contribution focuses on the chemical potential for new materials and on their physical characterization, especially with respect to the TCNX/metal electron transfer and to the spin distribution in paramagnetic states |
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